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DSVD 0.5T - 10T Chain Block, Chain Hoist for Construction Site

  • DAWSON/OEM
  • DSVD
  • 0.5-10Ton
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DSVD 0.5T 1T 1.5T 2T 3T 5T 10T Chain Block, 500kg 1000kg 1500kg 2000kg 3000kg 5000kg 10000kg Chain Hoist for Construction Site

Manual Chain Block for Construction Hoisting, Hand Chain Hoist for Lifting

- Dawson Group Ltd. - China Manufacturer, Supplier, Factory

DSVD Chain Block   DSVD Chain Block Dawson-group

Introduction:


All Steel Construction-Impact resistant covers that provide durability and protection.

Double pawl and double guide rollers enhance performance, safety, and reliability.

Unique curling design-This feature enables the hand chain to successfully feed directly into the wheel sprocket from many directions and angles.

Grade 80 Load Chain –Grade 80 black oxide coated load chain for durability 

Forged alloy Steel Hooks -Industrial rated hooks rotate 360 degrees for easy rigging. Hooks slowly stretch to indicate an overload situation increasing  jobsite safety.

Sealed roller bearing-Greatly improving performance and serve life of the product .

Certification-Load tested to 150% of capacity with certificate.

Model Capacity
(T)
Standard lift
(m)
Running test
(T)
Effort required to lift max load (N) No. of falls of load chain Load chain
diameter(mm)
Dimension(mm) Net weight(kg) Packing
(LWH)(cm)
A B C H
DSVD-0.5T 0.5 2.5 0.75 240 1 5 132 148 28 345 11 241918
DSVD-1T 1 2.5 1.5 250 1 6 151 172 32 376 12.5 282121
DSVD-1.5T 1.5 2.5 2.25 265 1 7.1 173 196 36 442 17.8 342620
DSVD-2T 2 3 3 335 1 8 175 210 36 470 19.5 342620
DSVD-3T 3 3 4.5 363 1 10 176 230 46 565 29 342620
DSVD-5T 5 3 7.5 360 2 9 189 280 46 688 41.3 413224
DSVD-10T 10 3 15 380 4 9 189 463 57 765 78.5 484218.5

DSVD chain blocks with high efficiency and small and hand pulling, are portable lifting device which are easily operated by hand with safe operation, durable in service with light weight and fine appearance.


Chain Hoist is widely used manual hoisting machinery which is easy to use and carry. It can be used in factory, mine, agriculture, electricity, construction site, wharf and dock. And it can also be used in installing of machinery, lifting, loading and unloading in the ware house, especially suitable to be used in the open air and the place without power source.


Welcome to buy the newest and competitive price DAWSON DSVD Chain Block, Chain Hoist from our factory. We're one of the leading China manufacturers and suppliers, offering you the wholesale service and the OEM service at a discount. With CE certification, our products made in China in stock are high in quality and low in price. Please be free to get the free sample from us.


For further information, please contact us. Email:info@dawson-group.com


DAWSON manual chain hoists are commonly known as chain blocks and are designed for heavy duty lifting and materials handling operations. Chain blocks raise and lower loads by pulling on the hand chain. Chain blocks can be of single or double fall configurations depending on the capacity of the block.



FEATURES

• Equipped with best quality hardening gear and chain won’t become stuck in troubles

• Adopt unique slot turbine design ad elegant appearance enjoying famous reputation

• Chain with high tension alloy galvanized material which resistant to rust and break

• High quality alloy hook with 360 degree rotation function used in confined space

• The hard and sturdy shell is solid enough and durable for protecting the inner parts

• Comfortable handle slip-resistant with rubber gripping and smooth touch feeling

• Up/down lever switch to up or down or neutral position adjust optionally the height

• Heavy duty and compact design which completely meet the related international standard

• Reliable, excellent disc brake, premium grade alloy load chain and galvanized hand chain

• The drop forged and heat treated hooks have a great strength and long wearing

• Triangle shape, economical, safe and reasonable structure as well as stable operation

• Samples and complete after-sale service, designed products and trial order are available

• With wider hooks opening makes easier handling and working for convenience

• 12 months warranty is the most reliable commitment we can provide to the customers

• Common-used parts, universal and strong compatibility and excellent performance

• Power coating highly provides a long lasting finish even in some hostile environments

• Double pawl and double guide rollers enhance products’ performance, safety and reliability


INTRODUCTIONS


DSVD chain blocks with high efficiency and small and hand pulling, are portable lifting device which are easily operated by hand with safe operation, durable in service with light weight and fine appearance. Sturdiness and reliability go hand when it comes to the DSVD chain blocks’ range, which feature a steel construction and comes with a gear case enclosure and hand wheel cover for optimum safety. DSVD chain blocks will provide you happy operation and excellent performance and you can keep regulators happy and boost productivity in one fell swoop.


A key feature of the DSVD chain blocks is the unique hand-wheel design that allows operators to be located at the side or even above the hoist without the fear of jamming. Unique curling design enables the hand chain to successfully feed directly into the wheel sprocket from many directions and angles, also featuring all-steel construction and fully-enclosed gearing. DSVD chain blocks are fitted with thrust bearings on lower hook assemblies. This feature allows units to rotate easily while suspended, preventing the load chain from twisting. Besides, they are plastic spray specially, and the permanent smooth film surface gets the ornamental and anti-corrosive effect.


Quality of DSVD chain blocks start at the top and having direct oversight at the factory helps lifting stay on top. All products are inspected, calibrated and load-tested at the main facility where the test certification is generated. This includes overload protection settings that are critical in saving property and lives. Thanks to overload protection, it is a safety mechanism design built into a product to protect it and its operators from potential damage. It also helps the user to determine the weight of their load. What’s more, overload  protection assembly will allow the hoist to be lowered while the brakes hold  the load. This means the load can be safely lowered and a higher-rated hoist can be used instead. However there are special considerations when it comes to overload protection with hoists, they are not all created equal. Calibration, if not done correctly, will only have overload protection by name. This is why DSVD chain blocks bring in all manufactured products from carefully screened and trained factories. A video showing a chain hoist triple-tested at 50 percent overload demonstrates how clever and innovative designs save cargo, equipment and lives. What’ more, the products fully meet the standard  ASME B30.16 and NASA-STD-8719.9.


Using special testing, the overload limiter is factory-set at approximately 50 percent over the rated load. As the load hits 50 percent over the rated load, the overload engages, which prevents operators  from using a cheater pipe or other mechanical advantages to create more leverage while eliminating the chance for hoist failure and injury. Repetitive overload stresses will eventually begin to stretch hooks, chain and interior components of the hoist, any of these could be dangerous and life threatening. Overload protection takes the guesswork out of the operators’ hands. The inherent safety built in assures that if a user guessed wrong it won’t result  in hoist failure. 


Another feature that saves time and money is that the DSVD chain blocks don’t need to be recalibrated after an overload is activated, as it automatically recalibrates the setting with no other adjustments. DSVD manual Chain Block is one of the most popular lifting hoists throughout the world, which is promoted from the Japanese model, patent model with revolutionary designs, special designed top hook can back out easily and can be installed with trolley directly. Premium grade alloy load chain and zinc plated hand chain as standard. Drop-forged and expertly heat treated hooks for great strength and long wearing.


DSVD chain blocks are popular among industrial fields for cranes such as travelling cranes and jib cranes. They can be used in factories, heavy industries, building construction, mining sites, agricultural and some areas where there is no power supply. This kind of chain blocks can also be attached to a trolley of any type as a traveling chain block. 


DSVD chain blocks are also called DSVD chain blocks, chain blocks, chain hoist, hand chain hoists, DSVD manual chain hoists, KT series chain hoists. This is DSVD type and has many names for type here such as VC-D, HSZ-CD, HSZ-KT, HS-R, CB, CB-II, HSZ-A810, all mean the same manual chain hoist.


1. Hooks

DSVD chain blocks adopt tensile safety hooks, forged alloy steel hooks cast steel  safety latches. Both the top and bottom hooks are made of high tensile alloy steel with special treatment which guarantees the hook will not break and deform gradually under a sudden extra-load. Load hooks are heat treated and fracture resistant. In case of dangerous overloading or abuse, the hook does not fracture but will slowly yield or bended. Besides, the opening month is widened or that the hook opening degree is increased so  that they can be applied in many other situations. Furthermore, it is easy to install and disassemble.

Forged Alloy Steel Hooks with Cast Steel Safety Latches for DSVD Chain Blocks - Dawson Group Ltd. - China Manufacturer, Supplier, Factory

2. Encloser

DSVD chain blocks adopt the double thickening design and the special tensile professional skills to the cover/enclosure which makes it resistant to the hit and rust or rainwater and not easy to break. Therefore, it can protect the inner mechanism well. It also use the special design of triangular spline long shaft design long axle structure which easy to disassemble, and it can widely applied in outdoors. Special heat treated top and bottom hooks have enough strength and toughness for hard job. The design of the bottom hook, with relatively large dimensions, makes it easy to stabilize a load in proper position. Bottom yoke with protecting guard features a guard protecting the chain pin and nut form damage, enhancing safety. The braking mechanism which makes up heart of the hoists, is enclosed in a double cover: the brake covers and wheel covers. These protective covers can not only keep out weather elements but also help to prevent mud and dust from entering internal mechanisms. Hand chain guide attached to the wheel cover provides durability and smooth operating.

Hand zipper disk cover use a special crimping process, which ensure to prevent the loud noise while the hand zipper is leaning or horizontal, at the same time, it improves the intensity. Also, hand zipper plate use deep groove design which will never card chain and available in many situations.

Encloser for DSVD Chain Blocks - Dawson Group Ltd. - China Manufacturer, Supplier, Factory

3. Construction

All steel construction, impact resistant covers that provide durability and protection. DSVD chain blocks adopt light weight and robust construction. The upper and down construction use forged framework which has elegant and  beautiful appearance and high intensity. The alloy steel shell is very strong and not easy to break. Also, the triangle shape is stable for the whole structure. Cause the exquisite structure, they are durable for use and can be applied in many tough situations and are resistant to water and rust, even corrosion-proof.

Alloy Steel Construction for DSVD Chain Blocks - Dawson Group Ltd. - China Manufacturer, Supplier, Factory

4. Gear

DSVD chain blocks adopt the best tenth shape rotating gears and all use low alloy steel and exquisite professional producing. Experienced the carbon and heat treatment and special surface treatment, it makes the surface clean, tidy, hard, corrosion-resistant and rust-proof, and they are durable in use. They can also make the full use and efficiency of the machine. AS a result of DAWSON research and development for a long time, DAWSON is successful in developing compact but highly efficient and durable gears. We adopt Japanese technology, symmetrical arrayed high-speed synchronous gears, and made according to  international standard gear steel, steadier, and more laborsaving.

Low Alloy Steel Gear for DSVD Chain Blocks - Dawson Group Ltd. - China Manufacturer, Supplier, Factory

5. Chain

The chains adopt the high intensity chains and the lifting efficiency has been improved 3 times. Thanks to the special design of the lead, the pull force need less compare to the same products. What’s more, chain guide mechanism in flanged load sheave and guide roller facilitate smooth movement of the load  chain.

High Intensity Chains for DSVD Chain Blocks - Dawson Group Ltd. - China Manufacturer, Supplier, Factory

6. Multi-point Support

DSVD chain blocks adopt multi-point support structure, which makes the operating  system more reasonable, convenient and flexible to rotate and have a low rate  to fail. The triangle structure is very stable, so the support is very strong.

Multi-point Support for DSVD Chain Blocks - Dawson Group Ltd. - China Manufacturer, Supplier, Factory

7. Double-pawl Braking

In order to improve the safety factor to a high level, DSVD chain blocks adopt double-pawl braking system in case of the emergency. It adopts double-pawl mechanism to further increase of sureness. In case one of pawl is damaged, the other maintains its functions. DAWSON dry type asbestos with free mechanical brake ensured strong brake performance.

Double-pawl Braking for DSVD Chain Blocks - Dawson Group Ltd. - China Manufacturer, Supplier, Factory

8. Overload Protection Wheel

Good quality overload protection wheel plays a vital role in the process of lifting loads, which can highly ensure the security to products, especially in some dangerous circumstances.

Overload Protection Wheel for DSVD Chain Blocks - Dawson Group Ltd. - China Manufacturer, Supplier, Factory

9. Guide Wheel

Lifting chain wheel, made of high quality alloy steel, uses special bearings at both ends, which has high precision and high intensity with great flexibility to rotate. Besides, compact structure of guide wheel provides a long using life to our products.

Guide Wheel Lifting Chain Wheel for DSVD Chain Blocks - Dawson Group Ltd. - China Manufacturer, Supplier, Factory

10. Bearing | Roller Bearing

Thrust bearing allows easy rotation of load while suspended and prevents load chain twisting. The bearing mechanism increases mechanical efficiency. Using of unique ball and needle bearing remarkably increases mechanical efficiency and produces high output power with minimum manual input. The roller bearing on the gear cover has low friction, low resistance and high stability. Besides, the wheel cover and the support plate are integrated.

Bearing Roller for DSVD Chain Blocks - Dawson Group Ltd. - China Manufacturer, Supplier, Factory

11. Shaft

The shaft is made of good quality steel, which is located on the wheels. And it has the function of making sure the operations of DSVD chain blocks.

Steel Shaft for DSVD Chain Blocks - Dawson Group Ltd. - China Manufacturer, Supplier, Factory

12. Gear Case

DSVD chain blocks are equipped with gear case and hand wheel cover which is resistant to external shocks. Both sides of the hoist are covered with a thick  steel gear case, processed with highest level technology, and with a strengthened wheel cover. They have ideal shape and rigidity to maintain bearing alignment and withstand external shock.

13. Stopper

Stopper assembly prevents excessive lowering of a load and also keeps load chain from  exiting if over lowered. When you feel a noticeable increase in pull force to lower the load, you may realize that you cannot lower the load any further.

14. Inner Structure

Inner structure is designed and manufactured by professional workers. And compact structure makes the products become more safe and reliable.

Inner Structure for DSVD Chain Blocks - Dawson Group Ltd. - China Manufacturer, Supplier, Factory

15. End Anchor

End anchor is a necessary component in DSVD chain blocks. It is easy to disassemble, and highly protect the load assignments from potential or possible dangers.

End Anchor for DSVD Chain Blocks - Dawson Group Ltd. - China Manufacturer, Supplier, Factory

16. Ratchet Disk

Ratchet disk is used in our DSVD chain blocks. It can highly stop the products immediately when the operations of lifting loads, especially in some hostile environments.

Ratchet Disk for DSVD Chain Blocks - Dawson Group Ltd. - China Manufacturer, Supplier, Factory

17. Unique Elastic Clutch

Unique elastic clutch adopts professional technology, which makes it lift goods at any height. It also make the lifting loads become more efficient.

Unique Elastic Clutch for DSVD Chain Blocks - Dawson Group Ltd. - China Manufacturer, Supplier, Factory

Others

           1.  Provided service

           ◊  We offer sample and trial order is OK.

           ◊  We offer quality assurance contract and complete after-sale service.

           ◊  We offer confidentiality agreement "business secret contract” for your  design safe.

           ◊  We have more than 50 professional technical team. After a large amount of developments, today we are one of the leading companies in our field, we have professional mature design team, quality control team, production management team and sales service team.

          2.  DSVD series chain block (chain hoist) is our newly supplied product, which is advanced in design, reliable in quality and superior in appliance. It possesses good performances as model HSZ series chain block and in equilateral triangle appearance, looking more special and nice.

DSVD Chain Blocks for Lifting - Dawson Group Ltd. - China Manufacturer, Supplier, Factory
DSVD Chain Blocks for Lifting - Dawson Group Ltd. - China Manufacturer, Supplier

3.  Components

           Fully forged Hooks

           With Double guide wheels

           With G80 load chains of high quality which can be galvanized/blacked as per option

           Automatic double pawl braking system

           Lightweight robust construction

           Low effort to lift maximum load 

           ISO high grade alloy load chain 

           Zinc  plated hand chain as standard

           Extra thick asbestos free friction discs

           Double cover protection (optional) black or galvanized load chain

           Durable backed enamel paint protection

           Overload protection device available upon request

4.  Caution

           ①Special attention should be paid to ensure the good contact between wheels and flange surfaces.

           ②When the hook is overload, it will become deformed slowly instead of suddenly fracturing.

5. Usage

DSVD Chain Block, Manual Chain Hoist for Moving Products - Dawson Group Ltd. - China Manufacturer, Supplier


INSPECTION BEFORE USE

Ensure that the chain block name plate and WLL is clearly visible and legible.

The pre-use inspection for a chain block should include the following:


Load chain

1.Inspect chain for wear.

2.Inspect chain for gouges, nicks, arc burns, twisted & bent links and corrosion.

3.Inspect for correct reeving on multi-reeved units (3 and 5 tonne).


Lift wheels & Sheave wheels

1.Inspect lift wheel for foreign material, wear and corrosion.

2.Inspect dead end pins for wear, tightness and corrosion.


Hooks

1.Inspect hooks for signs of opening, cracking, bending, arc burns and corrosion.

2.Hooks should swivel freely.

3.Inspect safety latches for condition & operation.

4.Measure the hook throats for allowable service openings.

 

Hand chain

1.Inspect chain for wear.

2.Inspect chain for twisted or gouged links and corrosion.

3.Inspect connecting link for signs of opening.


Miscellaneous

1.Inspect frame and covers for distortion, cracks, gouges, corrosion & other damage.

2.Inspect hangers (3 and 5 tonne) for cracks, gouges, corrosion & other damage.

3.Inspect unit for clear WLL identity.

 

CARE IN USE

1.The load chain must always mesh correctly with the load sheave. With multi fall chain blocks twists can arise by turning over the bottom hook through the load chain.

2.Regularly lubricate the whole length of the load chain with machine or gear oil but be careful not to over lubricate as oil or grease on the brake discs can cause the brake to malfunction and slip.

3.Confirm that the brake is functioning properly by hoisting the load 100mm and check the brake when lowering the load.

4.Non-vertical (sideways pulling) of the hand chain is not recommended on our chain blocks.

5.The hand chain is equipped with a safety link. When the safety link opens or deforms, stop at once and inspect for the cause.

6.Confirm that the monorail beam or structure supporting the chain block is of sufficient strength to support the load to be lifted.

7.Never lift loads in excess of the WLL of the chain block.

8.Never walk or work under a hoisted load and never lift, support or transport people.

9.Use chain blocks manually only.

10.Do not permit more than one operator to pull on the hand chain at one time.

11.Lift loads correctly with proper slings and attachments. Never lift with the point of the hook and never use the load chain as a sling by back hooking.

12.Lifting a load with two chain blocks is not recommended. If the operation is unavoidable, hoist the load with utmost care, keeping the load balanced.

13.Never run the load chain out too far. When operated beyond the range of lift, an excessive load that can cause damage will be imposed on the chain block.

14.Chain blocks are designed for lifting loads vertically and should not be used for horizontal or angle hoisting.

15.Extreme temperatures will reduce the durability of the hoist. Loads should be hoisted or lowered very slowly and carefully in extreme temperatures.

16.Never leave a load hanging on the hoist.

17.Never use the chain or hook as a ground for welding.

 

Asbestos free brake, holding load at any desired height. 

- Robust all-steel construction. 

- Top and bottom hooks are fitted with safety latches as standard. 

- All rotating components mounted on roller or ball bearings to reduce friction & increase efficiency.


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